Dioscuros

Dioscuros was a Pontic spy who served as the "Eyes of the King" under Kings Mithridates I and Ariobarzanes during the mid-3rd century BC. He was useful in gaining information on the troop strengths and positions of the Cappadocians and Galatians from the frontlines and relaying this information back to the Pontic generals, and he was often used to scout ahead into enemy territory to deliver reports on the enemy's preparedness for war.